What types of move should the speed factor affect?
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@Phaedrux said in What types of move should the speed factor affect?:
@DocTrucker said in What types of move should the speed factor affect?:
I'd be tempted to exclude z only moves so z hop can be dialled-in, in a similar way to retraction and the speed up not effect it. Negligable effect on overall build time in most builds.
Perhaps M207 could be extended to include Z hop speed?
https://duet3d.dozuki.com/Wiki/Gcode#Section_M207_Set_retract_length
Z-hop is generally so short that in practice it is acceleration-limited.
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@deckingman said in What types of move should the speed factor affect?:
Does the speed factor override also override the acceleration rate or just the speeds after the acceleration phase? Because if it doesn't affect the acceleration rate, then short moves like Z hop are likely to be unaffected because they will either be accelerating or decelerating and never attain the set Z speed in any case.
Acceleration and jerk are not affected by M220.
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From the version 3.1.0 change list at https://github.com/Duet3D/RepRapFirmware/blob/v3-dev/WHATS_NEW_RRF3.md:
The speed factor (M220) is no longer applied to extruder-only moves or to movement commands in system or user macro files
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Thanks for asking this thread. I don't know much about this speed factor. But I am interested and I would like to get some more details.
